52047421 has 8 divisors (see below), whose sum is σ = 55656504. Its totient is φ = 48499200.

The previous prime is 52047407. The next prime is 52047449. The reversal of 52047421 is 12474025.

It can be written as a sum of positive squares in 4 ways, for example, as 40068900 + 11978521 = 6330^2 + 3461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52047421 - 2¹⁹ = 51523133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52047451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13440 + ... + 16873.

It is an arithmetic number, because the mean of its divisors is an integer number (6957063).

Almost surely, 2^52047421 is an apocalyptic number.

It is an amenable number.

52047421 is a deficient number, since it is larger than the sum of its proper divisors (3609083).

52047421 is a wasteful number, since it uses less digits than its factorization.

52047421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30431.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 52047421 is about 7214.3898563912. The cubic root of 52047421 is about 373.3645423704.

The spelling of 52047421 in words is "fifty-two million, forty-seven thousand, four hundred twenty-one".